Add several NixOS hosts on Proxmox and Oracle Cloud

profiles/remote/oracle/sync/hardware-configuration.nix

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+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/4b47378a-02eb-4548-bab8-59cbf379252a";
+      fsType = "xfs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/2B75-2AD5";
+      fsType = "vfat";
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/f0126a93-753e-4769-ada8-7499a1efb3a9"; }
+    ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.ens3.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

profiles/remote/oracle/sync/nixos.nix

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+{ config, pkgs, modulesPath, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
+  environment.systemPackages = with pkgs; [
+    git
+    gnupg
+    ssh-to-age
+  ];
+
+  services.xserver = {
+    layout = "us";
+    xkbVariant = "altgr-intl";
+  };
+
+  nix.settings.experimental-features = ["nix-command" "flakes"];
+
+  sops.age.sshKeyPaths = [ "/etc/ssh/sops" ];
+  sops.defaultSopsFile = "/root/.dotfiles/secrets/sync/secrets.yaml";
+  sops.validateSopsFiles = false;
+  sops.secrets.swarsel = { owner = "root";};
+  sops.secrets.dnstokenfull = {owner="acme";};
+  sops.templates."certs.secret".content = ''
+  CF_DNS_API_TOKEN=${config.sops.placeholder.dnstokenfull}
+  '';
+
+  security.acme = {
+    acceptTerms = true;
+    preliminarySelfsigned = false;
+    defaults.email = "mrswarsel@gmail.com";
+    defaults.dnsProvider = "cloudflare";
+    defaults.environmentFile = "${config.sops.templates."certs.secret".path}";
+  };
+
+  services.nginx = {
+    enable = true;
+    recommendedProxySettings = true;
+    recommendedTlsSettings = true;
+    recommendedOptimisation = true;
+    recommendedGzipSettings = true;
+    virtualHosts = {
+
+      "synki.swarsel.win" = {
+        enableACME = true;
+        forceSSL = true;
+        acmeRoot = null;
+        locations = {
+          "/" = {
+            proxyPass = "http://localhost:27701";
+            extraConfig = ''
+                client_max_body_size 0;
+              '';
+          };
+        };
+      };
+
+        "sync.swarsel.win" = {
+          enableACME = true;
+          forceSSL = true;
+          acmeRoot = null;
+          locations = {
+            "/" = {
+              proxyPass = "http://localhost:8384/";
+              extraConfig = ''
+                client_max_body_size 0;
+              '';
+            };
+          };
+        };
+
+        "git.swarsel.win" = {
+          enableACME = true;
+          forceSSL = true;
+          acmeRoot = null;
+          locations = {
+            "/" = {
+              proxyPass = "http://localhost:3000";
+              extraConfig = ''
+                client_max_body_size 0;
+              '';
+            };
+          };
+        };
+    };
+  };
+
+  boot.tmp.cleanOnBoot = true;
+  zramSwap.enable = false;
+  networking.hostName = "sync";
+  networking.enableIPv6 = false;
+  networking.domain = "subnet03112148.vcn03112148.oraclevcn.com";
+  networking.firewall.extraCommands = ''
+  iptables -I INPUT -m state --state NEW -p tcp --dport 80 -j ACCEPT
+  iptables -I INPUT -m state --state NEW -p tcp --dport 443 -j ACCEPT
+  iptables -I INPUT -m state --state NEW -p tcp --dport 27701 -j ACCEPT
+  iptables -I INPUT -m state --state NEW -p tcp --dport 8384 -j ACCEPT
+  iptables -I INPUT -m state --state NEW -p tcp --dport 3000 -j ACCEPT
+  iptables -I INPUT -m state --state NEW -p tcp --dport 22000 -j ACCEPT
+  iptables -I INPUT -m state --state NEW -p udp --dport 22000 -j ACCEPT
+  iptables -I INPUT -m state --state NEW -p udp --dport 21027 -j ACCEPT
+  '';
+  services.openssh = {
+    enable = true;
+    settings.PermitRootLogin = "yes";
+  };
+  users.users.root.openssh.authorizedKeys.keyFiles = [
+    ../../../../secrets/keys/authorized_keys
+  ];
+
+  system.stateVersion = "23.11"; # TEMPLATE - but probably no need to change
+
+  environment.shellAliases = {
+    nswitch = "cd ~/.dotfiles; git pull; nixos-rebuild --flake .#$(hostname) switch; cd -;";
+  };
+
+  boot.loader.grub.device = "nodev";
+
+  services.anki-sync-server = {
+    enable = true;
+    port = 27701;
+    address = "0.0.0.0";
+    openFirewall = true;
+    users = [
+      {
+      username = "Swarsel";
+      passwordFile = config.sops.secrets.swarsel.path;
+      }
+    ];
+  };
+
+  services.syncthing = {
+    enable = true;
+    guiAddress = "0.0.0.0:8384";
+    openDefaultPorts = true;
+  };
+
+  services.forgejo = {
+    enable = true;
+    settings = {
+      DEFAULT = {
+        APP_NAME = "~SwaGit~";
+      };
+      server = {
+        PROTOCOL = "http";
+        HTTP_PORT = 3000;
+        HTTP_ADDR = "0.0.0.0";
+        DOMAIN = "git.swarsel.win";
+        ROOT_URL = "https://git.swarsel.win";
+      };
+      service = {
+        DISABLE_REGISTRATION = true;
+        SHOW_REGISTRATION_BUTTON = false;
+      };
+    };
+  };
+
+}